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Please use MapReduce to solve this problem. Some important points you must clarify: 1. How to separate data? 2. What is the Map task? What's the format of pairs? 3. What is the Reduce task? How do we get the final results?

Please use MapReduce to solve this problem. Some important points you must clarify: 1. How to separate data? 2. What is the Map task? What's the format of pairs? 3. What is the Reduce task? How do we get the final results?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Assume we capture students' webpage browsing records. We separate the records into two files: male and female, each with more than 10 billion records. The format of each record is: [student ID], [gender], [date], [time], [url], and they are not sorted. The main memory we can use is 16GB. We try to find the common urls visited by male and female students.

Please use MapReduce to solve this problem. Some important points you must clarify:

1. How to separate data?

2. What is the Map task? What's the format of <key, value> pairs?

3. What is the Reduce task? How do we get the final results?

You may earn extra credits if you can optimize your soultion. 

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